CVE-2026-97530Hinoki check available

CPU hang via continuation IOCB signature aliasing

Published Sep 25, 2026 · Updated Sep 25, 2026

Improper input validation in the Linux qla2xxx driver allows context-dependent attackers to hang a CPU via a crafted Fibre Channel frame. The qla27xx_copy_multiple_pkt() and qla27xx_copy_fpin_pkt() helpers treat payload bytes 56 through 59 as a RESPONSE_PROCESSED signature and spin indefinitely when they equal 0xDEADDEAD. The path requires a qla2xxx Fibre Channel adapter to receive a matching continuation IOCB, and the resulting soft lockup stalls the affected CPU.

CVSS severityUnavailable
Unscored
EPSS probability0.20%
Next 30 days · Oct 18, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Improper input validation in the Linux qla2xxx driver allows context-dependent attackers to hang a CPU via a crafted Fibre Channel frame. The qla27xx_copy_multiple_pkt() and qla27xx_copy_fpin_pkt() helpers treat payload bytes 56 through 59 as a RESPONSE_PROCESSED signature and spin indefinitely when they equal 0xDEADDEAD. The path requires a qla2xxx Fibre Channel adapter to receive a matching continuation IOCB, and the resulting soft lockup stalls the affected CPU.

The record

CVE
CVE-2026-97530
Published
Sep 25, 2026
Updated
Sep 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
adjacent
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.9
  2. Affected versionversion=9f2475fe7406b8ef5f97099c4980021344872d9f <6aa722fca9d2aa1f64094101587f8f4a2f83f6aa
  3. Affected versionversion=9f2475fe7406b8ef5f97099c4980021344872d9f <6e6c2ba9022eb8f9b062c81bdc6fd24c7b4c4c16
  4. Affected versionversion=9f2475fe7406b8ef5f97099c4980021344872d9f <d7e3fa7d06bf7fcaac186d3c4d635caac166d36c

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=5.9; version=9f2475fe7406b8ef5f97099c4980021344872d9f <6aa722fca9d2aa1f64094101587f8f4a2f83f6aa; version=9f2475fe7406b8ef5f97099c4980021344872d9f <6e6c2ba9022eb8f9b062c81bdc6fd24c7b4c4c16; version=9f2475fe7406b8ef5f97099c4980021344872d9f <d7e3fa7d06bf7fcaac186d3c4d635caac166d36c

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

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